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Increase in the market share of wind energy in total electricity generation and its impact to power grid has imposed new challenges to the stability of each wind turbine generator (WTG) unit. In the case of power undersupply, the problem on voltage stability and voltage collapse will eventually occur. In this paper, the impact of reactive power control in improving the performance of squirrel cage...
This paper presents a comparison of the performance of series and shunt compensation in stability improvement of wind farms. Static synchronous compensator (STATCOM) and static synchronous series compensator (SSSC) are used as shunt and series compensator respectively in order to enhance the system stability. The effect of control parameter tuning is also analysed. A comparison is also made between...
This paper studies the application of cascade STATCOM to improve the voltage stability of grid-connected wind farm. Firstly, a novel reactive power cooperative control strategy is proposed. Under this control strategy, the output of wind farm can remain stable during the wind changing rapidly and system fault. Further, the whole system model is established in PASCAD/EMTDC. At the end of paper, the...
Static var compensator (SVC) and thyristor controlled series compensator (TCSC) are used to improve Transient Voltage Stability of the asynchronous wind farm in this paper. The related structure model of the wind farm power system is built in Matlab / Simulink. The contributions of SVC and TCSC to Transient Voltage Stability of the asynchronous wind farm and power grid are verified by the simulation...
This paper presents an exhaustive simulation study performed to validate the adequacy of the equivalencing method promoted by the National Renewable Energy Laboratory for modeling wind power plants by single- and multiple-machine equivalents. The main simulation results are presented for a number of steady state and transient wind turbine generator operating conditions following various faults and...
Use of the doubly fed induction generator (DFIG) in wind energy generation systems allows variable speed operation by using partially rated back-to-back quadruple active and reactive power PWM converters. The control of the system is very complex. Despite numerous new control schemes reported in the literature, these control techniques, which are designed to solve some particular control problems,...
In this paper, a comprehensive time domain model for a wind park, suitable for stability analysis, is presented. The wind generator is modeled with a reduced order model for an asynchronous machine, whilst the wind turbine model takes into account the dimension of the turbine, the rotor blade and blade pitch angle. Each wind generator incorporates a STATCOM (static compensator) controller in order...
Increasing capacity of connected wind power generation to utilities brings new opportunities and also problems to the utilities and customers. Evolution and analyzing of the connection conditions and effects of wind farms especially on remote areas are the main aspects of developing wind power on the utilities, because the impact will be more serious. The problem is that these wind turbine that mostly...
Wind energy has taken off into a new peak in terms of its popularity among other new generation technologies. The socio-economic and environmental benefits impact the general population. A low cost of energy along with grid compatibility can be achieved due to mass production technology, power electronics advancement, and intelligent controllability. This paper attempts to shed the light on many aspects...
Grid connected wind generators may cause voltage stability problems due to insufficient reactive power support between the grid and the Wind Turbine Induction Generators (WTIGs). Continuous voltage control and reactive power compensation at the point of connection can be provided by using shunt FACTS devices to improve the stability of the distribution system. Using MATLAB/SIMULINK, the dynamic behavior...
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